I'm seriously leaning toward a Tyros 5, 61 key. But I've heard the Tyros 4 sounds better than the Tyros 5 gig wise.
I can't agree YOU the player make any arranger sound better...
T4, T5, S970 all do a amazing job not too much difference sound wise especially in the trenches if you know what your doing,...and size/weight matters in that respect also reason I use a S970...